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9 September 2026 Calnex Solutions plc ("Calnex" or the "Company") Capital Markets Day Calnex Solutions plc (AIM: CLX), a leading provider of test and measurement solutions for global telecommunications, digital infrastructure andgovernment & defence markets, will today host a Capital Markets Day for institutional investors and analysts. Tommy Cook, CEO and Ashleigh Greenan, CFO, will be joined by Adam Paterson, Head of Products, Peter White, VP of Marketing andProducts, and Graeme Urquhart, VP of Sales. Presentations will cover the opportunity within timing solutions, the growing need for resilience across network infrastructure, why AI is shapingData Centre and Cloud Computing infrastructure, and Calnex's route to market. The Company's trading performance in FY27 remains in line with market expectations, and no update on trading will be provided during the meeting. A copy of the presentation will be made available on the Company's website following the event. For more information, please contact: Calnex Solutions plc Via Alma Tommy Cook, Chief Executive Officer Ashleigh Greenan, Chief Financial Officer Cavendish Capital Markets Limited - NOMAD +44 (0)131 220 6939 Derrick Lee, Peter Lynch Alma Strategic Communications + 44(0) 20 3405 0213 Caroline Forde, Joe Pederzolli, Emma Thompson Overview of Calnex Calnex Solutions designs, produces and markets innovative test and measurement instrumentation that enables customers to validate theperformance of critical network technologies and applications. Our solutions support customers from R&D and pre-deployment through toin-service testing, providing confidence that networks and applications operate as intended in increasingly complex and performance-critical environments. To date, Calnex has secured and delivered orders in 68 countries across the world. Customers include BT, China Mobile, NTT, Ericsson, Nokia,Intel, Qualcomm, IBM, Nvidia and Meta. Founded in 2006, Calnex is headquartered in Linlithgow, Scotland, with additional locations in Belfast, Northern Ireland, Stevenage, Englandand California in the US, supported by sales teams in China and India. Calnex has a global network of partners, providing worldwide distributionand market access.